What could I expect MPG wise from one of these trucks? Interested in ditching my jeep as a daily driver and getting a pickup. I have an 11 mile commute that is almost all highway.

Also, on trucks with MDS(does 06 have it?) do these things go to sounding like a tractor when the MDS kicks in? I am sure you couldn't hear it with stock exhaust but with something louder is that a problem?

Thanks!